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Declaring Task Dependencies

Prepending Tasks

Uranium provides a declarative task dependency system through task_requires:

from uranium import task_requires

def main(build):
    print("main was")

# this ensures main is run first, during
# an execution.
def test(build):
    print("test was run")

# a list can be passed in. In that case,
# each dependency is executed in the order
# it appears in the list.
# notice that a string with the task name,
# or the task itself can be passed in.
@task_requires(["main", test])
def build_docs(build):
    print("main was")

This relationship can be created after the fact by add_requires:

# test requires main
build.tasks.prepend("test", "main")

Executing Tasks After an Existing Task

# ensures test executes after main
build.tasks.append("main", "test")